The Actual Definition of Muscle Tone. Muscle tone, also known as muscle tonus or residual muscle tension, is an unconscious low level contraction of your muscles while they are at rest. Essentially, muscle tone is what makes your muscles still feel somewhat firm while you are resting and not intentionally tensing them.
Everyone experiences abdominal pain from time to time. Other terms used to describe abdominal pain are stomachache, tummy ache, gut ache and bellyache. Abdominal pain can be mild or severe. It may be continuous or come and go. Abdominal pain can be short-lived (acute) or occur over weeks and months (chronic).
For example, you might feel severe abdominal pain if you have gas or stomach cramps due to a viral gastroenteritis. Sometimes, life-threatening conditions such as colon cancer or early appendicitis may only cause mild pain or no pain. Other ways of describing pain in your abdomen include: Pain may be generalized, meaning that you feel it in more than half of your belly. This is more typical for a stomach virus, indigestion, or gas.